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采用万能实验机和分离式Hopkinson压杆装置(SHPB)为加载手段,对5种不同质量分数的ZnO晶须辅助增强玻璃纤维/环氧树脂复合材料层合板厚度和平面内2个方向的准静态和动态压缩性能进行了实验研究,分别得到了5种材料的压缩应力应变曲线;采用SEM对材料断口进行了宏、细观观察,对其破坏机制进行了初步研究。结果表明:该类材料具有明显的非线性特征的本构关系和应变率强化效应,在厚度和平面内2个方向的压缩破坏也具有完全不同的复杂的破坏机制,同时还发现试样的压缩强度和失效应变与氧化锌晶须的质量分数有关。
Using universal testing machine and split Hopkinson pressure bar device (SHPB) as loading means, five kinds of ZnO whiskers with different mass fractions were used to enhance the thickness of glass fiber / epoxy composite laminates and the quasi-static And dynamic compressive properties were studied experimentally, and the compressive stress-strain curves of five kinds of materials were obtained respectively. The macroscopic and meso-scale observations of the material fracture were carried out by SEM, and the failure mechanism was studied. The results show that this type of material has the obvious non-linear constitutive relationship and strain rate hardening effect. Compressive damage in two directions in thickness and in plane also has completely different and complicated failure mechanisms. At the same time, it is also found that the compressibility Strength and failure strain are related to the mass fraction of zinc oxide whiskers.